Improvement in sheet-metal cans



UNITED STATES PATENT OFFICE.

JOHN SOLTER, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN SHEET-METAL CANS.

Specification'forming part of Letters Patent N0. 203,506, dated May 7, 1878 application filed April 13, 1878.

' of reference marked thereon.

This invention relates to certain improvements in the construction of that class of sheetmetal boxes whose seams are formed'without the aid of solder; and consists in forming in and upon the sheet of metal constituting the body of the box certain slots and projections, by means of which said body is held together or in shape, as hereinafter described.

In the drawing forming a part hereof, Figure 1 is an exterior View of a completed box. Fig. 2 is an exterior view of the body of the box ext-ended sufficiently to show the means of attachment. Fig. 3 is a view showing the mode of attachment.

Similar letters of reference indicate similar parts in all the figures. 1

A is the body of the box, consisting of a rectangular sheet of metal. Near one of its ends it is provided with slots a, the other end of the body having projections b. These slots and projections are stamped out by machinery. The upper edge of oneof the projections b is cut at less than a right angle to the edge 0 of the body, the lower edge, 12 of the projection bein grounded. The rounding of the said edge facilitates the entrance of the projection to the slot, as will be seen by reference to Fig. 3. The point I) of the upper projection b,when in place, is above the highest point, W, of the slot a, and efi'ects a secure fastening.

Both of the projections b may be shaped as the upper one is here shown; but this I do not deem necessary, as the body is held to its shape by the bottom 0.

After the body is formed in the manner described, the bottom 0 is placed thereon and crimped, and the bead 01 formed in the usual way.

Having described my invention, Iclaim as new and wish to secure by Letters Patent of the United States The box-body A, formed of a rectangular sheet of metal having slots at near one end, and projections 11 at the other end thereof, one or more of said projections having a point, b, and a rounded portion, 12 which point 11, when the body is formed, stands above the highest part, 12 of the slot at, and effects a fastening, substantially as set forth.

In testimony whereof I have hereunto subscribed my name this 29th day of March, in the year of our Lord 1878.

JOHN SOLTER.

Witnesses: W. W. WHARTON, J NO. T. Mnnnox. 

